Use k8s.gcr.io image repo as by kubernetes/kubernetes#54174

Author: den-is

01-path-basics/103-kubernetes-concepts/readme.adoc

@@ -736,7 +736,7 @@ Let's create a Deployment first that will create 3 replicas of a pod:
 	    spec:
 	      containers:
 	      - name: echoheaders
-	        image: gcr.io/google_containers/echoserver:1.4
+	        image: k8s.gcr.io/echoserver:1.4
 	        imagePullPolicy: IfNotPresent
 	        ports:
 	        - containerPort: 8080
@@ -767,7 +767,7 @@ Pod Template:
   Labels:  app=echo-pod
   Containers:
    echoheaders:
-    Image:        gcr.io/google_containers/echoserver:1.4
+    Image:        k8s.gcr.io/echoserver:1.4
     Port:         8080/TCP
     Environment:  <none>
     Mounts:       <none>

01-path-basics/103-kubernetes-concepts/templates/echo-deployment.yaml

@@ -1,17 +1,17 @@
 apiVersion: extensions/v1beta1
 kind: Deployment
 metadata:
-  name: echo-deployment 
+  name: echo-deployment
 spec:
-  replicas: 3 
+  replicas: 3
   template:
     metadata:
       labels:
         app: echo-pod
     spec:
       containers:
-      - name: echoheaders 
-        image: gcr.io/google_containers/echoserver:1.4
-        imagePullPolicy: IfNotPresent 
-        ports: 
+      - name: echoheaders
+        image: k8s.gcr.io/echoserver:1.4
+        imagePullPolicy: IfNotPresent
+        ports:
         - containerPort: 8080

01-path-basics/103-kubernetes-concepts/templates/echo.yaml

@@ -1,17 +1,17 @@
 apiVersion: extensions/v1beta1
 kind: Deployment
 metadata:
-  name: echo-deployment 
+  name: echo-deployment
 spec:
-  replicas: 3 
+  replicas: 3
   template:
     metadata:
       labels:
         app: echo-pod
     spec:
       containers:
-      - name: echoheaders 
-        image: gcr.io/google_containers/echoserver:1.4
-        imagePullPolicy: IfNotPresent 
-        ports: 
+      - name: echoheaders
+        image: k8s.gcr.io/echoserver:1.4
+        imagePullPolicy: IfNotPresent
+        ports:
         - containerPort: 8080

02-path-working-with-clusters/201-cluster-monitoring/templates/heapster/heapster.yaml

@@ -20,7 +20,7 @@ spec:
       serviceAccountName: heapster
       containers:
       - name: heapster
-        image: gcr.io/google_containers/heapster-amd64:v1.4.0
+        image: k8s.gcr.io/heapster-amd64:v1.4.0
         imagePullPolicy: IfNotPresent
         command:
         - /heapster

02-path-working-with-clusters/201-cluster-monitoring/templates/prometheus/prometheus.yaml

@@ -165,7 +165,7 @@ spec:
           initialDelaySeconds: 5
           timeoutSeconds: 5
       - name: addon-resizer
-        image: gcr.io/google_containers/addon-resizer:1.0
+        image: k8s.gcr.io/addon-resizer:1.0
         resources:
           limits:
             cpu: 100m